是信号处理的基础，预报误差法参数辨识-松弛的思想，isodata 迭代自组织的数据分析，最大似然（ML）准则和最大后验概率（MAP）准则，有均匀线阵的CRB曲线。-Is the basis of the signal processing, Prediction Error Method for Parameter Identification- the idea of relaxation, Isodata iterative self-organizing data analysis, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, There ULA CRB curve.